Railroad-frog



'1). m n-33G RAILROADEROG- I 1%. 276,070. Patented Apr. 17,1883.

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UNITED STATES PATENT OFFICE.

DENISON C. PIERCE, OF CHICAGO, ILLINOIS.

RAILROAD-FROG.

SPECIFICATION forming part of Letters Patent No. 276,070, dated. April 17, 1883.

Application filed November 3, 1882. (No model.)

To all whom it may concern Be it known that I, DENISON U. PIERCE, of Chicago, in the county of Cook and State of Illinois, have invented certain Improvements in Railroad-Frogs, of which the following is a specification.

My invention relates to railway-frogs, and is designed as an improvement on the lrog for which Letters Patent were granted to we bearing date the 7th day of April, 1874, and numbered 149,334. 1

The improvement consists in extending the frog beyond the ends of the rails, which are so joined thereto that the extension of the frog applies on the outside of the rails, in order to give a firm support to and preventthe spreading of the latter and to receive the weight of the car-wheels and carry them over thejoints; and, further, in applying a fish-plate to the joints uniting the rails and frogs, whereby the parts are held firmly in fixed positions relatively to each other. y

In the accompanying drawings, Figure 1. represents a top plan view of my improved frog and joint, and Fig. 2 a cross-section of the same on the line 00 :10 of Fig. 1.

A represents the frog, which is of usual form, except that at one end the sides of the frog are extended beyond their usual point of termination, forming wings or side supports, a, to sustain the rails B, to receive a part of the weight of the wheels, and to afford a body through which to pass the bolts b, by which the rails are joined to the frog. In order to make this joint stronger and more rigid, I apply to the joint on the inside, or on that side of the rail on which the flanges of the wheels pass, a fish-plate, C, passing the bolts 1) through it as well as through the rail and wing or extension a. This fish-plate may be either a flat strip of metal or may be cast or forged to fit the form of the rail,as is now done with other fish-plates. The inner faces of the Wings or extensions a are made to conform exactly to the form of the rails, which are of just the same height as the frog, and which therefore form,with the frog, an even unbroken surface, preventing the dropping of either below the other, and hence avoiding the battering or hammering ofv the frog, the rails, or the carwheels.

The present invention is to be distinguished from the one hereinbefore referred to, in that the wings or extensions in this case project beyond the middle portion of the frog, and in that they are of sufficient length, and are pertjorated to receive the bolts b and to permit the placing of the fish-plates on the inside of the rails between them,whereas in the former case the body of the frog between the rails extended outward as far as the outside extensions and filled the space between the rails.

Having thus described my invention, what I claim is In combination with the frog A,having extensions a, rails 13 and fish-plate C, all combined substantially as shown and described.

DENISON C. PIERCE.

Witnesses CHAS. H. FERGUSON, FRED. H. KILBOURN. 

